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28804952 = 23113110559
BaseRepresentation
bin110110111100…
…0011101011000
32000012102222002
41231320131120
524333224302
62505220132
7466560311
oct155703530
960172862
1028804952
1115294650
129791648
135c77067
143b7b608
1527dec02
hex1b78758

28804952 has 32 divisors (see below), whose sum is σ = 60825600. Its totient is φ = 12669600.

The previous prime is 28804949. The next prime is 28804961. The reversal of 28804952 is 25940882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552 + ... + 8007.

It is an arithmetic number, because the mean of its divisors is an integer number (1900800).

Almost surely, 228804952 is an apocalyptic number.

28804952 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28804952 is an abundant number, since it is smaller than the sum of its proper divisors (32020648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28804952 is a wasteful number, since it uses less digits than its factorization.

28804952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10607 (or 10603 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 28804952 is about 5367.0245015278. The cubic root of 28804952 is about 306.5413403039.

The spelling of 28804952 in words is "twenty-eight million, eight hundred four thousand, nine hundred fifty-two".

Divisors: 1 2 4 8 11 22 31 44 62 88 124 248 341 682 1364 2728 10559 21118 42236 84472 116149 232298 327329 464596 654658 929192 1309316 2618632 3600619 7201238 14402476 28804952